The TCA: Foundation of Post-Brexit UK-EU Trade
The UK-EU Trade and Cooperation Agreement (TCA), which took effect on 1 January 2021, governs the trading relationship between the United Kingdom and the European Union. It is the most significant trade agreement the UK operates under, given that the EU remains the UK’s largest single trading partner. For businesses on both sides of the Channel, understanding the TCA’s key provisions is essential to minimising costs and maintaining smooth supply chains.
Zero Tariffs and Zero Quotas — With Conditions
The headline feature of the TCA is its commitment to zero tariffs and zero quotas on goods traded between the UK and EU. However, this benefit is not automatic. Goods must meet the agreement’s rules of origin to qualify for preferential treatment. If a product does not meet the origin requirements, standard Most Favoured Nation (MFN) tariff rates apply.
According to GOV.UK, traders must ensure that their products qualify and that they hold the correct documentation — typically a statement on origin made by the exporter on a commercial document.
Rules of Origin: The Critical Detail
Rules of origin determine whether a product is “sufficiently” British or EU in origin to qualify for zero-duty treatment. The TCA uses several criteria:
Wholly Obtained Products
Products entirely grown, harvested, or extracted in the UK or EU (e.g., agricultural products, minerals) automatically qualify.
Sufficiently Processed Products
For manufactured goods, the TCA sets product-specific rules (PSRs) that define the minimum level of processing or transformation required. These may be expressed as:
- Change of tariff classification — the finished product must have a different HS heading than the imported inputs
- Value-added threshold — a minimum percentage of the product’s ex-works price must originate from qualifying materials or processing
- Specific manufacturing process — certain products must undergo defined production steps
Cumulation
The TCA allows bilateral cumulation, meaning UK manufacturers can use EU-originating materials (and vice versa) and still count them as originating for rules of origin purposes. This is crucial for integrated supply chains.
Navigating rules of origin is one of the most complex aspects of the TCA. An experienced customs broker can review your product sourcing and confirm preferential qualification.
Customs Procedures and Border Controls
Despite zero tariffs, the TCA does not eliminate customs formalities. UK-EU trade now requires:
- Customs declarations — both export (from the UK) and import (into the EU) declarations, and vice versa
- Safety and security declarations — Entry Summary Declarations (ENS) for goods entering the EU; pre-departure declarations for goods leaving the UK
- SPS checks — products of animal and plant origin are subject to sanitary and phytosanitary controls at the border
- Regulatory checks — goods must comply with the destination market’s product regulations (UKCA vs CE marking)
VAT and Excise Changes
The TCA does not cover VAT, which is governed by each party’s domestic law. Key changes since Brexit include:
- UK importers of EU goods must pay import VAT at the border (postponed VAT accounting is available)
- EU businesses selling to UK consumers may need to register for UK VAT
- Distance selling thresholds have changed, with the EU operating a One-Stop Shop (OSS) system
Services, Data, and Mobility
While this guide focuses on goods, traders should note that the TCA’s provisions on services are more limited than pre-Brexit arrangements. Key impacts include:
- Loss of automatic mutual recognition of professional qualifications
- Restrictions on temporary business mobility and work permits
- Data adequacy decisions allowing continued data flows (subject to review)
Dispute Resolution and Future Changes
The TCA includes formal dispute resolution mechanisms and is subject to periodic review. Both parties can propose changes, and the agreement’s Joint Partnership Council oversees implementation. Traders should stay informed of any amendments that could affect their operations.
The EasyClearance team monitors TCA developments and helps businesses adapt their customs processes to regulatory changes.
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